Thompson, E.A.
A history of Attila and the Huns / E.A. Thompson
Clarendom, 1948
 Buku Teks SO
Suzuki, Daisetz Teitaro, 1870-1966
A brief history of early chinese philosophy
Probsthain, 1914
 Buku Teks SO
Alfred J. Rieber
The struggle for the Eurasian borderlands: from the rise of early modern empires to the end of the First World War
Cambridge University Press, 2014
 eBooks
China's early empires : a re-appraisal
edited by Michael Nylan, Michael Loewe
Cambridge University Press, 2010
 Buku Teks SO
Spencer, Frank
A History of the world in the 20th century, part 2: 1918-1945
Pan Books, 1967
 Buku Teks SO